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-rw-r--r--lib/common_test/src/ct_telnet.erl3
-rw-r--r--lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl26
2 files changed, 27 insertions, 2 deletions
diff --git a/lib/common_test/src/ct_telnet.erl b/lib/common_test/src/ct_telnet.erl
index babe73e575..4e03bf8630 100644
--- a/lib/common_test/src/ct_telnet.erl
+++ b/lib/common_test/src/ct_telnet.erl
@@ -1122,7 +1122,8 @@ teln_expect1(Name,Pid,Data,Pattern,Acc,EO=#eo{idle_timeout=IdleTO,
NotFinished ->
%% Get more data
Fun = fun() -> get_data1(EO#eo.teln_pid) end,
- case timer:tc(ct_gen_conn, do_within_time, [Fun, IdleTO]) of
+ BreakAfter = if TotalTO < IdleTO -> TotalTO; true -> IdleTO end,
+ case timer:tc(ct_gen_conn, do_within_time, [Fun, BreakAfter]) of
{_,{error,Reason}} ->
%% A timeout will occur when the telnet connection
%% is idle for EO#eo.idle_timeout milliseconds.
diff --git a/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl
index 0ddb4e9b00..bd5d76266a 100644
--- a/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl
+++ b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl
@@ -44,6 +44,7 @@ all() ->
expect_error_timeout1,
expect_error_timeout2,
expect_error_timeout3,
+ total_timeout_less_than_idle,
no_prompt_check,
no_prompt_check_repeat,
no_prompt_check_sequence,
@@ -134,9 +135,32 @@ expect_error_timeout2(_) ->
expect_error_timeout3(_) ->
{ok, Handle} = ct_telnet:open(telnet_server_conn1),
ok = ct_telnet:send(Handle, "echo_loop 5000 xxx"),
+
+ T0 = now(),
{error,timeout} = ct_telnet:expect(Handle, ["yyy"],
[{idle_timeout,infinity},
- {total_timeout,3000}]),
+ {total_timeout,2001}]),
+ Diff = trunc(timer:now_diff(now(),T0)/1000),
+ {_,true} = {Diff, (Diff >= 2000) and (Diff =< 4000)},
+
+ ok = ct_telnet:send(Handle, "echo ayt"),
+ {ok,["ayt"]} = ct_telnet:expect(Handle, ["ayt"]),
+ ok = ct_telnet:close(Handle),
+ ok.
+
+%% OTP-12335: If total_timeout < idle_timeout, expect will never timeout
+%% until after idle_timeout, which is incorrect.
+total_timeout_less_than_idle(_) ->
+ {ok, Handle} = ct_telnet:open(telnet_server_conn1),
+ ok = ct_telnet:send(Handle, "echo_no_prompt xxx"),
+
+ T0 = now(),
+ {error,timeout} = ct_telnet:expect(Handle, ["yyy"],
+ [{idle_timeout,5000},
+ {total_timeout,2001}]),
+ Diff = trunc(timer:now_diff(now(),T0)/1000),
+ {_,true} = {Diff, (Diff >= 2000) and (Diff =< 4000)},
+
ok = ct_telnet:send(Handle, "echo ayt"),
{ok,["ayt"]} = ct_telnet:expect(Handle, ["ayt"]),
ok = ct_telnet:close(Handle),